H21B4

Series: -
Sensing Distance: 0.118" (3mm)
Sensing Method: Transmissive
Mounting Type: Through Hole
Package / Case: PCB Mount
Packaging: Tube
Current - DC Forward (If): 50mA
Output Configuration: Photodarlington
Manufacturer: Fairchild Optoelectronics Group
Current - Collector (Ic) (Max): 40mA
Response Time: 7µs, 45µs
Voltage - Collector Emitter Breakdown (Max): 55V


Features:

• Opaque housing
• Low cost
• 035" apertures
• High I _C(ON)


Specifications

Parameter	Symbol	Rating	Unit
Operating Temperature	T OPR	-55 to +100	°C
Storage Temperature	T STG	-55 to +100	°C
Soldering Temperature (Iron) (2,3 and 4)	T SOL-I	240 for 5 sec	°C
Soldering Temperature (Flow) (2 and 3)	T SOL-F	260 for 10 sec	°C
INPUT (EMITTER) Continuous Forward Current	IF	50	mA
Reverse Voltage	VR	6	V
Power Dissipation (1)	PD	100	mW
OUTPUT (SENSOR) Collector to Emitter Voltage	V CEO	55	V
Emitter to Collector Voltage	V ECO	6	V
Collector Current	IC	40	mA
Power Dissipation (TC = 25°C) (1)	PD	150	mW

1. Derate power dissipation linearly 1.33 mW/°C above 25°C.
2. RMA flux is recommended.
3. Methanol or isopropyl alcohols are recommended as cleaning agents.
4. Soldering iron tip 1/16" (1.6mm) minimum from housing.


Description

The H21B4, H21B5 and H21B6 consist of a gallium arsenide infrared emitting diode coupled with a silicon photodarlington in a plastic housing. The pack aging system of H21B4, H21B5 and H21B6 is designed to optimize the mechanical resolution, coupling efficiency, ambient light rejection, cost and reliability. The gap in the housing provides a means of interrupting the signal with an opaque material, switching the output from an "ON" to an "OFF" state.

Parameters:

Technical/Catalog Information	H21B4
Vendor	Fairchild Semiconductor
Category	Sensors, Sensor Evaluation Kits
Lead Free Status	Lead Free
RoHS Status	RoHS Compliant
Other Names	H21B4 H21B4